Dangerous Passions. Brenda Harlen

Private investigator Michael Courtland had promised to watch over Shannon Vaughn, the target of a vengeful enemy. But the moment Michael saw her, he knew protecting her would be more than just duty. And when escaping certain death left them stranded on a deserted island, he found himself longing to be with her, hold her, make love to her….Shannon couldn't deny her attraction to Michael, but could she trust him? Though he'd saved her life, she could tell he had secrets–secrets that could tear them apart. Yet as danger closed in on them, she wondered what she would do without him–and she realized that wasn't a thought she wanted to entertain….